<?php
/* 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
//$txt='<a href="#">hansen</a>';
//$show=preg_replace('/(^|\s)\@'.preg_quote('hansen').'/ius', '$1'.$txt, 'jj @hansen,what\'s wrong with@johslin');

$show=preg_match('/^([a-z0-9\-\._\x{4e00}-\x{9fa5}]+)$/iu',"#$");
?>
<?=  $show?>
